diff --git a/js/common/view/graph/ZoomButtonGroup.js b/js/common/view/graph/ZoomButtonGroup.js
index 820a4033..2b858cc2 100644
--- a/js/common/view/graph/ZoomButtonGroup.js
+++ b/js/common/view/graph/ZoomButtonGroup.js
@@ -60,8 +60,8 @@ class ZoomButtonGroup extends HBox {
     } );
 
     // expand touch areas
-    zoomOutButton.touchArea = zoomOutButton.localBounds.dilated( 5, 5 );
-    zoomInButton.touchArea = zoomOutButton.localBounds.dilated( 5, 5 );
+    zoomOutButton.touchArea = zoomOutButton.localBounds.dilated( 5 );
+    zoomInButton.touchArea = zoomOutButton.localBounds.dilated( 5 );
 
     assert && assert( !options.children, 'ZoomButtonGroup sets children' );
     options.children = [ zoomOutButton, zoomInButton ];
diff --git a/js/macro/view/MacroPHMeterNode.js b/js/macro/view/MacroPHMeterNode.js
index b61e4d05..b8d76d57 100644
--- a/js/macro/view/MacroPHMeterNode.js
+++ b/js/macro/view/MacroPHMeterNode.js
@@ -269,7 +269,7 @@ class PHProbeNode extends ProbeNode {
     } );
 
     // touch area
-    this.touchArea = this.localBounds.dilated( 20, 20 );
+    this.touchArea = this.localBounds.dilated( 20 );
 
     // drag listener
     this.addInputListener( new DragListener( {